• Corpus ID: 239050448

Interplay of Kelvin-Helmholtz and superradiant instabilities of an array of quantized vortices in a two-dimensional Bose--Einstein condensate

  title={Interplay of Kelvin-Helmholtz and superradiant instabilities of an array of quantized vortices in a two-dimensional Bose--Einstein condensate},
  author={L. Giacomelli and Iacopo Carusotto},
We investigate the various physical mechanisms that underlie the dynamical instability of a quantized vortex array at the interface between two counter-propagating superflows in a two-dimensional Bose–Einstein condensate. Instabilities of markedly different nature are found to dominate in different flow velocity regimes. For moderate velocities where the two flows are subsonic, the vortex lattice displays a quantized version of the hydrodynamic Kelvin–Helmholtz instability (KHI), with the vortices… 


Kelvin-Helmholtz instability in a single-component atomic superfluid
We demonstrate an experimentally feasible method for generating the classical Kelvin-Helmholtz instability in a single component atomic Bose-Einstein condensate. By progressively reducing a potential
Hydrodynamic instabilities
  • vol. 37, Cambridge University Press, doi:10.1017/CBO9780511975172
  • 2011
Hydrodynamic stability
  • Cambridge university press
  • 2004
Fluid Mechanics
Ludwig Krinner (Dated: November 5th 2012) Abstract This is a script made with the help of Landau Lifshitz, Book VI [1] on fluid mechanics, that gives a short introduction to basic fluid mechanics.
Understanding superradiant phenomena with synthetic vector potentials in atomic Bose-Einstein condensates
We theoretically investigate superradiance effects in quantum field theories in curved space-times by proposing an analogue model based on Bose--Einstein condensates subject to a synthetic vector
Ergoregion instabilities in rotating two-dimensional Bose-Einstein condensates: Perspectives on the stability of quantized vortices
We investigate the stability of vortices in two-dimensional Bose--Einstein condensates. In analogy with rotating spacetimes and with a careful account of boundary conditions, we show that the
Pattern formation of quantum Kelvin-Helmholtz instability in binary superfluids
We study theoretically nonlinear dynamics induced by shear-flow instability in segregated twocomponent Bose-Einstein condensates in terms of the Weber number, defined by extending the past theory on
Bose–Einstein Condensation and Superfluidity
This book on Bose–Einstein condensation (BEC) and superfluidity, is an extended version of the notable work by the pioneering researchers Sandro Stringari and Lev Pitaevskii, which first appeared in
Is a Doubly Quantized Vortex Dynamically Unstable in Uniform Superfluids
We revisit the fundamental problem of the splitting instability of a doubly quantized vortex in uniform single-component superfluids at zero temperature. We analyze the system-size dependence of the